feat: implement core backend architecture and project management services for the History API

pkg/config/config.go

@@ -1,10 +1,10 @@
 package config
 
 import (
-	"errors"
 	"fmt"
 	"history-api/assets"
 	"os"
+	"strconv"
 	"strings"
 
 	"github.com/joho/godotenv"
@@ -13,15 +13,17 @@ import (
 func LoadEnv() error {
 	envData, err := assets.GetFileContent("resources/.env")
 	if err != nil {
-		return errors.New("error read .env file")
+		return nil
 	}
 	envMap, err := godotenv.Parse(strings.NewReader(envData))
 	if err != nil {
-		return errors.New("error parsing .env content")
+		return fmt.Errorf("error parsing .env content: %w", err)
 	}
 
 	for key, value := range envMap {
-		os.Setenv(key, value)
+		if os.Getenv(key) == "" {
+			os.Setenv(key, value)
+		}
 	}
 	return nil
 }
@@ -41,4 +43,30 @@ func GetConfigWithDefault(config, defaultValue string) string {
 		return defaultValue
 	}
 	return data
-}
+}
+
+func GetIntConfigWithDefault(config string, defaultValue int) int {
+	data := strings.TrimSpace(os.Getenv(config))
+	if data == "" {
+		return defaultValue
+	}
+
+	value, err := strconv.Atoi(data)
+	if err != nil {
+		return defaultValue
+	}
+	return value
+}
+
+func GetBoolConfigWithDefault(config string, defaultValue bool) bool {
+	data := strings.TrimSpace(os.Getenv(config))
+	if data == "" {
+		return defaultValue
+	}
+
+	value, err := strconv.ParseBool(data)
+	if err != nil {
+		return defaultValue
+	}
+	return value
+}